/*
 * OPIAM Suite
 *
 * Distributable under LGPL license.
 * See terms of license at gnu.org.
 */

package opiam.admin.applis.demo.actions;

import opiam.admin.applis.demo.beans.Group;
import opiam.admin.applis.demo.forms.GroupForm;

import opiam.admin.faare.persistence.javabeans.JBTop;
import opiam.admin.faare.service.UserContext;
import opiam.admin.faare.service.services.StandardService;
import opiam.admin.faare.struts.actions.SecureAction;
import opiam.admin.faare.struts.utils.SessionContext;

import org.apache.log4j.Logger;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;
import org.apache.struts.action.ActionMessages;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import java.io.IOException;



/**
 * This class allows to show a group entry.
 *
 * This Action class inherits from SecureAction class.
 * The SecureAction class checks that the user is connected before calling
 * the action methods.
 */
public class EditGroupAction extends SecureAction
{
    /** Instance of the log4j logger.
     * Used to generate the execution traces. */
    private static Logger _logger = Logger.getLogger(EditGroupAction.class);

    /**
     * This method is called to execute the action once the checks have been
     * performed by the SecureAction class.
     *
     * @param mapping              Struts mapping data.
     * @param actionForm           FormBean associated with the action.
     * @param request              HTTP request.
     * @param httpServletResponse  HTTP response.
     *
     * @return An ActionForward.
     *
     * @throws IOException  An I/O exception if failed or interrupted I/O operations occurs.
     * @throws ServletException  A ServletException if the servlet has a problem.
     */
    @Override
	public ActionForward secureExecute(ActionMapping mapping,
                                       ActionForm actionForm,
                                       HttpServletRequest request,
                                       HttpServletResponse httpServletResponse
                                      ) throws IOException, ServletException
    {
        SessionContext sessionContext = null;
        UserContext userContext = null;
        ActionMessages msgErrors = new ActionMessages();

        // Gets the entry dn from the request.
        String dn = request.getParameter("dn");

        try
        {
            // Gets the session.
            HttpSession session = request.getSession();

            // Gets the session context.
            sessionContext = SessionContext.getInstance(session);

            // Gets the user context.
            userContext = sessionContext.getUserContext();

            // Writes the operation on the output defined in the
            // logger_config.properties.
            _logger.info("Edit group : " + dn + " by user: " +
                         sessionContext.getUserContext().getDn()
                        );

            // Calls the StandardService to load the entry corresponding
            // to the given dn.
            JBTop loadedObj = StandardService.load(dn, userContext);

            // Converts the entry in Group entry.
            Group group = (Group) loadedObj;

            // Clones the entry to allow to do a roolback if an error occurs.
            // The clone also allows to manage the concurrent access.
            Group gclone = (Group) group.clone();

            // Adds the cloned group entry in the formBean.
            GroupForm gf = new GroupForm();
            gf.setGroup(gclone);

            // manages the member

            session.setAttribute("groupForm", gf);

            return mapping.findForward("success");
        }
        catch (Exception se)
        {
            // Writes the error on the standard ouput console.
            se.printStackTrace();

            // Writes the error on the output defined in the
            // logger_config.properties.
            _logger.error(se.getMessage());

            // Gets the error message from the message-resources file
            // defined in the struts-config.xml
            msgErrors.add(ActionMessages.GLOBAL_MESSAGE,
                          new ActionMessage("error.service.unknown")
                         );

            // Save the error message in the request to display it in the jsp
            // page.
            saveErrors(request, msgErrors);

            // Returns the URI corresponding to the error.
            return (mapping.findForward("error"));
        }
    }
}
